package Thread.Collable;

import java.util.concurrent.Callable;

public class MyCallable implements Callable<String> {
private int n;
public MyCallable(int n){
    this.n = n;
}
    @Override
    public String call() throws Exception {
        //描述线程的任务，返回线程执行后的结果
        //需求：求1-n的和返回
        int sum = 0;
        for (int i = 0;i<=n;i++){
            sum+=i;
        }
        return "线程求出1-"+n+"的和是"+sum;
    }
}
